Pliers



1I/County ERCARLSQN,

E. R. CARLSON June 9, 1925.

Patented .lune 9, 1925.

PATENT oFFicE.

ELMER R. CARLSON, F GALVA, ILLINOIS.

PLIERS.

Application filed May 17,

To all whom t may concern:

Be it known that I, ELMER R. CARLSON, a citizen of United States,residing at Galva, inv the county vof I-'Ienry' and State of Illinois,have invented certain new and useful Improvements in Pliers, of whichthe following isa specification, reference being had therein to theaccompanying drawing.

j The present invention relates to pliers, and aims to provide a noveland improved implement ofthat kind including effective inea-ns `betweenthe handlesand jaws for moving"` the jaws toward one another withmaximum power when gripping the handles in the hand;

Another'object is the provision of such a tool which combines therein abolt and nut wrench, a pipe wrench, a wire cutter, a hand vise, and aslip joint adjustment for the jaws.l

With the foregoing and other objects in view, which will be apparent asthe description proceeds, the invention resides in the construction andarrangement of parts, as hereinafter described and claimed, it beingunderstood that changes can be made within the scope of what is claimed,without de-f parting from the spirit of the invention. I

Figure 1 is a side elevation of the pliers showing the aws adjusted inclose relation.

Fig. 2 is a` side elevation of the tool showing the adjustmentl with thejaws spaced apart, and also showing the jaws swung away from one anotherin dotted lines.

Fig. 3 is atop view of the tool with the parts as seen in Fig. 1.

Fig. 4 is a cross section on of Fig. 1.'

Fig. 5 is a fragmentary elevation of one lever, showing the pivot boltin cross section.

Fig is a. similar view showing the other lever in dotted lines inposition as when changing the pivot bolt from one position to another.

The pliers comprise the levers and 11 crossing one another andhaving thebroadened portions 12 and 13, respectively, at the, point of crossingbearing against one another side by side. Said levers have therespect-ive complementary jaws 14 and 15 beyond the portions 12 and 13.The confronting faces of the jaws have the flat pincer por# tions 16 atthe ends of the jaws, the toothed the line 4 4 1924. semi no. 718,888.

ornotche'd pipe wrench portions 1T between the ends of the jaws, and thewire cutters 18, and 18, respectively, at the bases of the jaws, wherebythe pliers can be used as pin'cers, a pipe or rod wrench, and a ywirecutter, as will be'apparent.

The crossing portions 12 and 13 of thelevers are pivoted togetheradjustably by pivot bolt 19 which extends through said portionstransversely, and which has ahead 20at one endand a nut 21 threadedthereon at the other terminal. The bolt or pivot member 19 has flatsides, and the portion 13 of the lever 11 has a non-circular opening 22receiving thebolt 19, whereby said bolt and lever cannot turn relativelyto one another. This prevents the bolt from turning in the opening 22.The portion 12 of the lever 10 has transversely spaced circular openings23 and 24 connected by a Slot 25 which is of a. width slightly less thanthe diameter of said openings, and the bolt 19 can be disposed in eithero-f said openings for adjusting the levers and jaws transverselyrelatively to one another to either of the positions shown in Figs. 1and 2. In the ordinary operative positions of the levers 10 and 11, t-heHat sides of the bolt 19- are disposed at an angle with the slot 25,thereby maintaining the levers in theirv relative pivotal adjustment,but when the levers are turned to a position substantially at rightangles with one another, as Seen iny dotted lines in Fig. 6, the bolt 19can then pass through the slot 25 for shifting the bolt from one openingof the portion 12 to the other. In this way, the pivotal adjustment ofthev levers can be changed when the levers are moved to the position asseen in Fig. 6, and when the levers are swung toward one. another tooperative position and the bolt 19 is turned in eitheropening 23 or 24,the bolt is retained in the corresponding opening, to maintain thepivotal adjustment. This adjustment per se is well known, but is takenadvantage of in thepresent tool. 1

The lever 11 has a handle 26, the lever l1144 being longer than thelever 10, and a handle 27 is pivoted, as at 28, to the short lever 10.The handles 26 and 27 extend from those arms of the levers 11 andlO'opposite to the jaws. The. lever 27 has a lateral extension 29projecting from the pivot 28 toward the handle 26, whereby the handlepivot 28.l The link 30 is connected to the portion o-r arm 29 by thepivot 31, and the link 30 is connected to the jaw 15 by the rivet 32.The rivets constituting the pivots 28 and 3l are countersunk, as seen inFig. Il, soV as not to interfere with the link 30 andl lever 11,respectively. "The head 2O oit' the bolt 19 is flattened oili at oneside .to accommodate the link 30 when the jagws are brought together, asseen inVY Fig. l'. The inner` side ofthe lever l1 is also bevelled,

as at 34C, sc that therportion 29 will notYY catch against the lever llwhen swinging the handles.v toward one another.;

By the provision of the handle 27 pivoted to the lever 10 and the linkconnection between the handle 27 and lever ll, a powerful action of thejaws is provided when the handles 26 and 27 are gripped in the hand andforced toward one another. rl`hus, the handle 27 swings toward thehandle 26 relativelyr to the lever 10, and applying a thrust to the link30.YV When the jaws grip the object betweenY them, so as to limit theswinging movement oithe levers l and ll toward one another, there is atendency for the lever or handle 27 to swing toward the handle 2Gabout'the pivot 3l, thereby pulling -onothe pivot 28 in Va directionalong an arc around the pivot 3l, thereby applying considerable powertothe levers l0 and ll for moving the jaws' toward one another. Because ofthe link connection between the levers -and`27, the lever or handle 27has a swinging Inovement relatively to the lever i0, so that the leveror handle 27 has a greater swinging motion relatively to the lever 1lthan doesthe lever 10 soV as to obtain al more powerful purchase.

*When the lever l0 is? swung to a position substantially at'right angleswith the lever l1, the pivot bolt 19 is turned so that it can passthrough the slot from the opening 23 into the opening 24, er vice versa,thereby positioning the jaws either close together or spaced apart` asseen in Figs. l and 2, respectively. This slip joint connection of thelevers l0 andi-l1 permits the levers l() and ll to be adjustedtransversely relatively 'to one another, and the link connection betweenthe lever ll and handle 27 permits ot such adjustment withoutinterfering with the lever action when the handles are swung toward oneanother. i

' 'Having thus described the invention, what is claimed as' new is:-

l. Pliers comprising crossing levers having a pivot joint at their pointof crossing and cooperable jaws at one end, a handle pivoted to one oi'said levers, the other lever having` a handle cooperable with thefirstname'd handle to be grasped in the hand for moving said handlestowardgone another, said handlesf being: at-.thos'e extremities of thelevers opposite to the jaws, and a linkV pivoted to the iirstnaniedhandle and secondnamed lever with said link crossing, between itspivots, vthe lirstnamed lever.

2. Pliers comprising levers crossing one another and having a pivotjoint at the point of crossing, eachl lever nhaving an armprovided witha jaw and said jaws cooperating, a` handle pivoted to one` lever, theother lever 4having a handle cooperable with thetirstnamed handle toYbegraspe'd'in the hand for moving said handles toward one another, saidhandles being at those terminals oi' the levers opposite to said jaws,the firstnamed handle having a portion extending at an angle toward thesecondnamed lever, and a link pivoted at one end to said portion and atits other end to the secondnamed Ylever adjacent tothe jaw ot saidAlever.

Pliers comprising levers crossing one another and having a pivot jointat the point of crossing, each lever` having an` arm provided withLa and said jaws cooperating, a` handle pivoted to one lever, the otherlever having a handle cooperable with' the lirstnamed handle to begrasped in therhand ior moving said handles toward one another, saidhandles being at those terminals of the levers opposite to said jaws,the lirstnamed handle having a portionextending at an angle toward thesecondnamed lever, and a link pivoted at oneend to said portion and atits other end to the secondnamed lever adjacentj to the'jaw ofsaidlever, said link crossing, between its pivots, the lirst lnamed leverand being arranged obliquely relatively to said iirstnained lever. 'i

l. Pliers comprising levers crossing one another and .having a pivotjoint at the point of crossing, said levers having cooperable jaws atone end, a handle pivoted to vone lever, the other lever having a handlecooperable with the firstnamed handle to be grasped in the hand formoving the handles toward one another, and a llink pivoted at one end tothe firstnamed handle and at its other end to the secondnamed' leveradjacent t-o the jaw of said? lever and arrangedto receive a compressivethrust when thehandles are moved toward one another so as to force thejaws toward one another.

5. Pliers comprising levers crossing one another andhaving a pivot jointat their point of crossing,said levers' having cooperable jaws at oneend, bell crank lever pivoted at its elbow to one of said levers, thelong arm of said bell crank lever providing a handle, the other of saidcrossing levers having a handle cooperable with' the afore-y llO lill)said handle to be grasped in the hand :for moving said handles towardone another, the short arm of the bell crank lever projecting toward thesecondnamed of the crossing levers, and a link pivotecl at one end tosaid short arm and at its other end to the seeondnamed of the crossinglevers adjacent to crossing levers and being arranged oblique- 10 lythereof.

In testimony whereof I hereunto alliX my signature.

ELMER R. CARLSON.

